numpy: update to 1.8.1

Change-Id: If9712aa765c515a17fad146599d2166bf044bdcf
Add data/baselines for tests.

Since the disappearance of PARAVIEW_DATA_ROOT, these tests were not
being run and hence the binaries weren't being fully tested!

Change-Id: Ib0a5ab0b4061d21965159283817f9ac28b9ea0c4
Merge topic 'numpy-1.8.1' into master

0c833d3b numpy: update to 1.8.1
Patch installation to remove absolute paths to the build dir

Change-Id: I13f772d053e3c3f723552a384d7f2f5547f4f97b
Enable system versions of most packages

Change-Id: Id5a95c5275c76cc39641df40a0b087ffe8b846b2